JSON Schema Validator
Validate any JSON document against a JSON Schema (Draft-7) in your browser. See detailed error messages with instance paths and schema paths.
Load example:
JSON Schema
JSON to Validate
JSON Schema Validator
The JSON Schema Validator checks any JSON document against a JSON Schema (Draft-7) using the battle-tested Ajv library. All validation runs client-side — your data never leaves the browser.
How to use
- Paste or type your JSON Schema in the left panel
- Paste or type the JSON data you want to validate in the right panel
- Click Validate
- Errors are displayed with instance paths and detailed messages
JSON Schema Draft-7 features
type,properties,required,additionalPropertiesminimum,maximum,minLength,maxLengthenum,const,formatanyOf,oneOf,allOf,not$refanddefinitionsfor reusable schemas
About Ajv
Ajv (Another JSON Validator) is the most downloaded JSON Schema validator for JavaScript with over 400 million npm downloads per month.